SFW9Z34TM P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The SFW9Z34TM is a P-Channel MOSFET manufactured by onsemi, rated for 60V drain-to-source voltage with 18A continuous drain current in a surface mount TO-263 (D2PAK) package. This device is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design support and procurement continuity. Substitute parts must maintain electrical and mechanical compatibility within the specified parameter ranges to ensure direct replacement capability in existing applications.

Substiute Parts

SFW9Z34TM

onsemiIn Stock: 50501SFW9Z34TM Datasheet

Current PartRFQ

SPB18P06PGATMA1

Infineon TechnologiesIn Stock: 2771SPB18P06PGATMA1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SFW9Z34TM are identified based on strict electrical and mechanical parameter compatibility. The substitution criteria are:

Primary Matching Parameters:

• FET Type: P-Channel
• Drain to Source Voltage (Vdss): 60V minimum
• Continuous Drain Current (Id): 18A or greater at 25°C
• Package Type: TO-263 (D2PAK) surface mount configuration
• Operating Temperature Range: -55°C to 175°C or greater
• Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Parameters:

• Gate threshold voltage (Vgs(th)): 4V maximum
• On-state resistance (Rds On): 140 mOhm or lower at specified conditions
• Gate charge (Qg): 38 nC or lower at 10V
• Maximum gate voltage (Vgs): ±20V or greater

The SPB18P06PGATMA1 meets all primary and secondary matching criteria, confirming direct substitution capability.

Parameter Comparison

Engineering Selection Recommendations

The SPB18P06PGATMA1 from Infineon Technologies is a qualified substitute for the obsolete SFW9Z34TM. Selection is based on the following engineering criteria:

Product Status Alignment: The SPB18P06PGATMA1 maintains Active product status, ensuring long-term availability and manufacturing support compared to the obsolete SFW9Z34TM.

Electrical Parameter Compatibility: The substitute part exceeds the minimum electrical requirements of the original device. Continuous drain current is rated at 18.7A versus 18A, and on-state resistance is improved at 130 mOhm versus 140 mOhm. Gate charge is reduced to 28 nC from 38 nC, resulting in lower switching losses. All voltage ratings (Vdss, Vgs(th), Vgs) meet or exceed the original specifications.

Mechanical and Thermal Compatibility: Both devices utilize identical TO-263-3 (D2PAK) surface mount packaging with two leads plus tab configuration. Operating temperature range is identical at -55°C to 175°C. Moisture sensitivity level is equivalent at MSL 1 (Unlimited).

Regulatory and Compliance Alignment: Both parts maintain REACH Unaffected status and EAR99 ECCN classification, ensuring equivalent regulatory compliance for export and use.

Packaging and Supply Considerations: The SPB18P06PGATMA1 is supplied in Tape & Reel (TR) format with 2717 units currently in stock, providing immediate procurement availability for production requirements.

Frequently Asked Questions (FAQ)

Q: Can the SPB18P06PGATMA1 directly replace the SFW9Z34TM in existing PCB designs?

A: Yes. Both devices share identical TO-263-3 (D2PAK) package geometry with two leads plus tab configuration. Pin-to-pin compatibility is confirmed, allowing direct PCB substitution without layout modifications.

Q: What are the key electrical differences between these two parts?

A: The SPB18P06PGATMA1 provides improved electrical performance: continuous drain current is 18.7A versus 18A, on-state resistance is lower at 130 mOhm versus 140 mOhm, and gate charge is reduced to 28 nC from 38 nC. Input capacitance is also lower at 860 pF versus 1155 pF. All differences favor the substitute part.

Q: Are there any gate voltage limitations when substituting?

A: The SPB18P06PGATMA1 has a maximum gate voltage rating of ±20V compared to ±30V for the SFW9Z34TM. Applications operating within ±20V gate voltage range experience no limitation. Applications requiring gate voltages between ±20V and ±30V require circuit review to confirm compatibility.

Q: Do both parts have the same thermal characteristics?

A: Both devices operate across the identical temperature range of -55°C to 175°C (TJ). The SPB18P06PGATMA1 is rated for 81.1W power dissipation at ambient temperature, providing adequate thermal performance for applications previously using the SFW9Z34TM.

Q: What is the moisture sensitivity level for both parts?

A: Both the SFW9Z34TM and SPB18P06PGATMA1 are rated at MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply to both devices.

Q: Are there supply chain advantages to using the SPB18P06PGATMA1?

A: Yes. The SPB18P06PGATMA1 maintains Active product status with 2717 units in current stock, compared to the obsolete SFW9Z34TM. This ensures long-term availability and eliminates obsolescence risk for new designs and production continuity.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both devices maintain REACH Unaffected status and EAR99 ECCN classification, confirming equivalent regulatory compliance for all markets and applications.